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specification, j in which-T F. A. onnasomon RoME, YORK.

' non` CUTTING ivrirnaaivn` oTHERJoINTs.

j specification of Letters Patent No. 12,482, dated March e, 1855.

`To all/whom concern.; l p A Be `it knownothat HI, j F. A. GLEAsoN, of

Rome, in the county` of Oneida and State "of New York,l havey'invented a new i and useful Machine for Dovetailing a Miter or. other Joint; and I do hereby declare that the following `is @a full, clear, and vexactvde-l scription o-f theconstruction and operation of thesanie, reference` being had" to the an-V nexed drawings, `making a part` lof this" Figure 1 isaperspect-ive view; Figs. 2,

l `3), and 4 are detachedsectional,views; Figs.` 5, `(3, and `are detached portionsof it. j `The same `letters refer to likeparts in` each of the figures.

The nature of my` invention consists in attaching to the arbor or mandrel of a turning lathe" or any sifnilar machine, chuck,

upon whichis fixeda circular saw and clearing knife,- and in its center a rotary dovetail groover, by which a dovetail groove `may be cut longitudinally or otherwise; `also in attaching to thefheadstock al small frame or stock in which `runs an` arbor car- Aryingy a saw and bevel cutter, by which, i combined with the groover a dovetail tongue may be formed corresponding with `the lfgroove;` and gin a carriage with an adjust j able bed .which required.

niay be set to any angle In the annexed drawings A, represents the i `fbed,`B, the headstock, C, thearbor; and D,

the"pulley of `a common turning lathe.

The. construction `of invention 1s as fo-llows: To thenoseof the arbor C, I at* `tach by screw or `otherwise the chuck E, upon whichI fasten4 the circular miter saw F, b-y `turning a shoulder angular, or `undercut as seen at (61)" Fig. 2, and then "cutting away sections of -it as shown Fig. 3.

The `saw is `turned out and cut "to correspond withit, then placed onand turned ma little `backward which" fastens it.

tween the saw and the toothed wheel J is xed the clearing knifefb). In the center 3` of the chuck is fixed` by screw the dovetail groover Gr, an enlarged and detached view of which is seen Fgf'?. It is formed with `two cutting blades opposite to eachother,

, on the ends of which are flanges or lips `forfcutting off the chip. f

j ,Fig. 5 represents the tonguing stock which is attached.r to the headstock B, `by the shank` H being placed in the stirrup I,

" Fig. 6, and fastened bythe set'screw (f).

f its i arbor is fastened rthe tonguing 'saw (.cland the bevelcutter which is constructed `with a` collar which fits upon the arbor, the opposite ends being notched into the saw.

isa toothedwheel, gearing into the j (g) is a sectional view of the boXes in which the arbors run.` They are screwed intothe frame-instead o-f being notched in and fastened rby cap and screws. By this method the arbors may be carried back or forward, andvso adjusted as to cut in line with each other. The inner end is squared for awrench as seen at Figs. 5 and 6. The arbor is made conical and the boX bored lto wheel J, Fig. r1,..b`y .which it is driven,Fig. 4. j l

correspond with it that it maybe tightened i 4a-s it wears away.

. In theconstruction of the carriage (m m) arethe waysupon which it runs (n n) are thecross ways upon which the bed is carried to or from the saws by the adjust-ing screw (0)...

(p) is the feeding screw (which may be geared to the arbor or turned by `hand,) (r) the handle attachedv to a. cam which disconnects the feeding screw from the carriage, `(s) the bed, t) its sup-port, fastened to it by a set screw in the slot by which it may be set to any angle required.

`(o) is a. set screw to fasten the carriage when adjusted.

is the clamp for fastening the work.

The operation is as follows: I take off the tonguing stock, bring the carriage forward, and by the adjusting screw (o) move t-he bed so near the miter saw that the dovetail groover shall cut through the center or any desired portion of the work. The machine is then set running, and by turning the feeding screw, the work is carriedpast the saw F, which cuts the Initer; the clearing knife cuts away the part lrunning back of the saw which would otherwise run against the chuck; and the groover cuts a dove'tail groove or channel` through.` I then place the carriage opposite the saw and by the adjusting screw (o) bring the bed so far back that the piece just grooved laid loosely upon it shall drop down to the position shown at (e) Fig. 8, which determines the position of the tongue. I then place the the groover cuts the upper side, and the toiguing saw and bevel cutter cut the under s1 e.

Having thus described my invention, What I claim and desire to secure by Letters Patent isl. The rotary dovetail groover as described, or its equivalent.

2. I claim the miter saw F with the clearing knife (b) fixed upon the same chuck and concentric With the groover; also the manner of fastening the saws as described.

3. I claim the tonguing stock with its saw and bevel cutter or their equivalents; also the manner of attaching it to the headstock.

4. I claim the carriage with its movable bed which maybe adjusted to any angle required.

F. A. GLEASON. Witnesses:

JOHN H. HUNTINGTON, GEORGE BARNARD. 

